Dell PowerVault MD3420 - Manual (Page 239)

Notes
Each disk pool name must be unique. You can use any combination of alphanumeric characters,
underscore (_), hyphen(-), and pound (#) for the user label. User labels can have a maximum of 30
characters.
You might want to remove selected physical disks from a disk pool if you need to create a separate group
or remove unneeded capacity from the storage array. The removed physical disks become unassigned
physical disks and the data that existed on them is redistributed across the remaining physical disks in the
disk pool. The capacity of the disk pool is decreased by the capacity of the physical disks that you
remove. Removing physical disks from a disk pool is always carried out as a background task and the
virtual disks remain fully accessible during this operation. The progress of the removal operation is
reported as part of the long running operations status.
This command fails if there is not enough free capacity on the physical disks that remain in the disk pool
to store the data that was on the physical disks you remove from the disk pool. Reserve capacity in the
disk pool might be used to store data that was on the physical disks you remove from the disk pool.
However, if the reserve capacity falls below the critical threshold, a critical event is written to the major
event log.
The RAID controller module firmware determines how many physical disks you can remove. You can
then select the specific physical disks to be removed. The RAID controller module firmware bases the
count on the amount of free space needed to redistribute the data across the remaining physical disks
without consuming any capacity reserved for reconstructions. If the free capacity of the disk pool is
already less than the Reserved Reconstruction Physical Disk Amount, the RAID controller module does
not allow a DCR operation to begin.
A DCR operation might result in the configured capacity exceeding one or both of the Pool Utilization
Thresholds. If so, normal threshold alerts are issued.
Register SNMP Community
Description
This command creates a new Simple Network Management Protocol (SNMP) community, community
name string, and registers the new community as a known entity to the SNMP agent. Any attempt to
register a new community with the same name as that of an existing community is rejected and the
firmware returns an error message.
Syntax
create snmpCommunity communityName="snmpCommunityName"
Parameters
Parameter Description
communityName The name of the SNMP community that you want
to create. Enclose the SNMP community name in
double quotation marks (" ").
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